Suppose you calculate a 95% and 90% confidence interval for the true proportion of college students with student loan using the same data set. Which of the following must be true? a) The 95% confidence interval is wider than the 90% confidence interval. b) The 95% confidence interval is the same length as the 90% confidence interval. c) The 95% confidence interval is narrower than the 90% confidence interval. d) There is no way to tell from the given information.

Q: If n- 22, - 44, and s 12, construct a confidence interval at a 95% confidence level. Assume the data…

A: Solution We solve it by using excel

Q: A sample survey finds that 30% of a sample of 880 Ohio adults said good health was the thing they…

A:

Q: If you increase the confidence level, the confidence interval  A. Gets wider B. gets narrower  C.…

A: We know that-The confidence interval is given byHere, x¯ = sample meanσ = population standard…

Q: What is the correct conclusion? O A. Since the interval contains the proportion stated in the null…

A: The correct conclusion is: If confidence interval contains value of parameter in null hypothesis…

Q: A political poll of Americans was conducted to investigate their opinions on gun control. Each…

A:

Q: Beth wants to determine a 90% confidence interval for the proportion of high school students in a…

A: We have given that,  Population proportion (p) = 0.57, margin of error (E) = 0.04 and confidence…

Q: In a middle school with 500 students, it was found that the true proportion of brunettes is 17.8%.…

A: To find: which of the following statements will be true?

Q: You are interested in constructing a 99% confidence interval for the proportion of all caterpillars…

A:

Q: A. A sample of 400 diabetic patients was used in estimating the percentage of diabetics that are…

A: A)Givensample size(n)=400x=42sample proportion(p^)=xn=42400=0.105confidence level=95%

Q: 00000 the confidence interval? Both the margin of error and the width would increase. The margin of…

A: It is given that the two confidence interval. Here, need to compare the effect of decreasing…

Q: You are constructing a 99% confidence interval for the proportion of all caterpillars that…

A: Given information- Sample size, n = 396 We have given that out of 396 randomly selected caterpillars…

Q: If a 90% confidence interval for the difference of means ?1 – ?2 contains all negative values, what…

A: Consider that µ1 and µ2 are the population means for 1st and 2nd populations respectively.

Q: An economist at the Florida Department of Labor and Employment needs to estimate the unemployment…

A: An economist at the Florida Department of Labor and Employment needs to estimate the unemployment…

Q: A-2. A recent survey shows that the proportion of international students in the undergraduate…

A: Given that  p=20%=0.20  95% C.I=(18%=0.18 , 22%=0.22) p-E=0.18 0.20-E=0.18 E=0.20-0.18=0.02

Q: Consider the following two clinical trials concerning an investigational drug given for the…

A: #1: For 95% confidence interval, α=0.05. From Standard normal table, the value corresponding to…

Q: Two Population Proportions with Confidence Intervals

A: male sample n1 = 69       proportion p1= 5269 female sample n2 = 131      proportion p2 =120131

Q: We survey a random sample of American River College students and ask if they drink coffee on a…

A: Given information: The 90% confidence interval for the proportion of all American River College…

Q: Suppose you constructed a 90% confidence interval for the true average GPA of California community…

A: Solution: 1. From the given information, 90% and 80% confidence interval for the true average GPA of…

Q: You are interested in constructing a 95% confidence interval for the proportion of all caterpillars…

A: Solution: Given information: n= 371 Sample of caterpillars  x = 45 caterpillar lived to become…

Q: One researcher finds a 95% confidence interval for a prevalence of heart disease in a population as…

A: We have given that  95% confidence interval is  26.2 percent with margin of error 4.2 percent    90%…

Q: Mark each statement TRUE or FALSE. For these problems, assume that to estimate average time spent…

A: It is given that the sample size is 10.

Q: You are interested in constructing a 99% confidence interval for the proportion of all caterpillars…

A:

Q: A 95% confidence interval for the proportion of young adults who skip breakfast is .20 to .27. Which…

A: Given that  95% confidence interval for proportion of young adults who skip breakfast is 0.20 and…

Q: If we find a 95% confidence interval using a sample, then we can say... 95% of individuals will fall…

A: Given that:A 95% confidence interval using a sample is obtained.To find:The interpretation of this…

Q: You are interested in constructing a 90% confidence interval for the proportion of all caterpillars…

A: From the provided information, Sample size (n) = 378 From which 45 lived to become butterflies, so…

Q: You are interested in constructing a 95% confidence interval for the proportion of all caterpillars…

A:

Q: Which is true about a 95% confidence interval for a population proportion based on a given sample? A…

A: The given information about the 95% confidence interval for a population proportion.

Q: X1 = n1 = X2 = n2 =

A: Given that people over 40 is group 1 and people 20-40 is group 2. Sample size for group 1 is denoted…